Programming :: Resume Download By Curl Without Mentioning The No. Of Bytes?
May 25, 2011
I am trying to resume an aborted download. I have to use the curl_easy_setopt(hnd, CURLOPT_RESUME_FROM_LARGE,(curl_off_t)no. of bytes to be skipped) to set from where to start resuming download. But in run time, how would i put the no. of bytes to be skipped? Its not possible always to see how much is the size of file downloaded already. So is there any way so that prograjm will automatically know from where to start??
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Apr 18, 2011
I am having some issues with downloading images to my website from my suppliers!
I have a text file (extracted from product their product lists) which has all of the image URLs!
I have tried to use php using the below script which was started via a cron job, however exec is blocked and my hoster has told me to use curl..... Is there something that can be written in or with curl to do the same thing?
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Jun 22, 2010
I know I have done this in the past but I apparently have some slightly off syntax. I need to download a list of files via cURL. The list of files changes dynamically and I have a server side script that runs and creates a manifest. I grab the manifest and then download the files from that. The files are formatted correctly in the manifest as I have done before but the issue is that when I grab files, only the first one is saved and the rest are written stdout. curl -O -K filemanifest.txt
Formatting of filemanifest.txt is as follows:
[URL]
[URL]
I know the filemanifest.txt format is correct as this is the same format as I have used previously without issues, I must just be calling it wrong somehow.
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May 6, 2011
I'm using cURL in ubuntu to download some files like
While some files may be missing from this sequence but when I just use curl -O [url]
cURL will download a 404 error page for those missing ones. How can I avoid this?
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Aug 9, 2011
I need to download a file from a website which has a URL formatted like:
[URL]
This redirects to a .zip file which has to be saved. There is also a need to authenticate based on username and password.
I tried to use wget, curl and lynx with no luck.
UPDATE:
wget doesnt work with redirection. It simply downloads the webpage instead of the zip file. curl gives the error "Maximum redirection exceeded > 50 " lynx also gives the same error.
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Jan 9, 2011
I recently had to move to a new machine, everything went well except for one thing. I did fresh installation of LAMP server all with default configs. Every time I'm using PHP script to that invokes include, require or require_once I get the following error:
Code: Fatal error: Allowed memory size of 20971520 bytes exhausted (tried to allocate 7680 bytes) in /var/www/index.php on line 2 index.php file: PHP Code:
<?php include "index.php";?>
icukapi.php file:
PHP Code:
<?php echo "test";?>
My memory_limit in php.ini is set to 20M. I tried to increase that however it didn't quite work. PHP seems to allocate all possible space and return that message every time i try. If somebody has an idea of how to fix it I would be more than grateful. I spend quite a long time searching for an answer however the all things i found suggested increating memory_limit which in this case doesn't work.
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Jun 24, 2010
Is there any curl API to configure only the required protocol. If I have proper openssl installed, the installed curl will have all the protocols (like HTTP, HTTPS, FTP, File etc...) supported by default. Is there any way to allow or disallow only some of the protocol at the runtime. Say I need to support only HTTPS, FILE and I dont want to allow HTTP. Is there any way to do this?
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Dec 17, 2008
How do i fill a file with <n> bytes at a given value ,for example 3?
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May 5, 2010
I am trying to write some code that interfaces with an AVR over a serial port. Basically I send a command then read the output which is 6 bytes. I need to receive all 6 bytes before the program continues. Is there a way to do this? If I use read() it returns -1 unless I add a delay before reading the port. Is there a way to get it to read the 6 bytes as soon as they arrive?In python you simply say how many bytes you want and the max time you are willing to wait which seems a whole lot easier than read
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Mar 4, 2011
I have a vector of octets that needs to be converted to a std string. I'm currently doing it this way:
Code:
stringstream ss;
for (unsigned int i=0; i < data.size(); i++
{
ss << data[i];
}
string s_data = ss.str();
This works, but is there any better way to do it?
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May 26, 2011
I want to if there's any plugin for firefox or so that can save your incomplete (still in process) downloads and can resume after the next boot.i just lost my broadband connection and now i am stuck with this mobile internet (android on ubuntu) and sometimes when i want to go outside i have to shutdown my computer because i have to carry my phone with me.so is there any app or plugin for firefox so i can resume my download after i get home.
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Sep 1, 2011
Maybe some torrent client for Linux can understand the metadata generated by a Windows client. Or maybe there is a Web/Desktop client that works in both systems. Is there any way to do that?I use uTorrent for Windows, and I haven't used any torrent client on my Ubuntu 11.04 yet. But if the solution uses other client for Windows, it will work for me.
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Apr 9, 2011
I have tried so many download managers it ain't funny, but there's one thing they all don't seem to know how to do well, and that's resume problematic downloads. I have used both fast and slow Internet connections on 3 continents (currently I'm on a slow and intermittent one as I live in Burma) so speed doesn't seem to be what causes the problem. And I download from many, many different sites, so it's not site specific either. The problem is as follows. I'm downloading a file from a server that supports resuming downloads but something goes wrong with the download and the download manager reports an error, like "size mismatch", or "timeout error".
What I really, really want to know, is why can't these managers resume downloads that experience these errors? Why can't they set markers during the download process (say every 5MB) so that if a problem like a size mismatch, a connection dropout, or a timeout occurs, then it can backtrack only slightly and then resume? I download a couple of shows from revision3 each week and more often than I care to remember they've failed at around 70% of a 300MB+ download and merrily just start downloading all over again. Another frustrating thing is they ditch the file that didn't finish, so I can't even watch the part of the show I had. I live with it, though it's very frustrating, but I wonder why these download managers aren't more intelligent.
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Feb 16, 2011
What is the problem? I receive this message (see in red) when i running this script (below) on bash script file:
error received:
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 70 0 70 0 0 321 0 --:--:-- --:--:-- --:--:-- 0
IMAG_DOS.ZIP
[code]....
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Sep 6, 2010
I've got an asp page (I can't edit) which I can access with a test user I've setup, however when I try to access to same page via curl, I get the following error:
Code:
<h1> You are not authorized to view this page </h1>
The URL you attempted to reach has an ISAPI or CGI application installed that verifies user credentials before proceeding. This application cannot verify your credentials. There's lots of other text (doubt it's relevant though).
Here's the one liner I'm using:
Code:
curl -A "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)" -u myusername:mypassword [URL]
I've done some searching but cant find anything which doesn't suggest rewriting the asp...
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May 25, 2011
I am trying to download a non-existent file from a repository by giving the URL, using curl APIs. It is throwing an error message "The requested URL returned error: 404" but the specified file is downloaded with 0 bytes. My code snippet is as follows :
#include <curl/curl.h>
#include <stdio.h>
#include <math.h>
[code]....
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Feb 18, 2011
We have a program that catalogs to 40 different mount points. The program is fine as long as thier is free space on at least one of the 40 mount points. My boss wants me to come up with a script that will email us daily to know how much overall free space is left. I know I can do a df but I don't know how to combine the 40 mount points into a single disk used/disk free report.
The 40 mount points are /dev/mapper/areaxx, xx being 01 to 40.
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Apr 15, 2010
Can httpmethod of httpclient support downloading more than 8192 bytes?
If not, any other ways?
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Apr 29, 2010
I have used wget to try to download a big file. After several hours I realized that it would have been better to use a download accelerator. I would not like to discard the significant portion that wget has already downloaded. Do you know of any download accelerator that can resume this partial download?
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Jan 24, 2010
I am using a perl script which uses curl in the background to download files from rapidshare premium,one file at a time. I wanted to know is it possible to use curl and spawn multiple connection at a time,to download the same file in multiple parts?? I don't seem to find an option in curl which does that.
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Jun 24, 2011
I am writing a script that is used to submit a package to testflight from my build system. In order to make the presentation as clear as possible I would like to include some basic HTML in the note section, however, using a < or > causes an error in curl. I have tried different variations of quoting and escaping but have not yet been able to find the solution.
Code:
VERSION_HEADER='<strong>Version: </strong>'
VERSION=`cat $VERSION_NUMBER_FILE`
NOTES+=( "$VERSION_HEADER$VERSION
[Code]...
If I use VERSION_HEADER="'<strong>Version: </strong>'" then the single quotes are submitted.
If I use < or > then those are submitted but the receiving api does not decode them correctly.
Can anyone suggest a way to submit exactly: <strong>Version: </strong>
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Feb 9, 2011
create a large buffer in my program so that I can send, and then receive on another pc, more than 4096 bytes (this seems to be the default for the serial port). I thought this might work:
[code]...
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May 6, 2011
I need to build an https client in 'C' language on linux platfrom and my app is a multithreaded one...in each thread it need to send a seperate https request to the same server..and receive response.... I used openssl library for this, i am able to send request to server. but when i am trying to read the socket (using SSL_Read) it's closing connection(returning 0 with error code 29).
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Jun 9, 2010
i have written file transfer program using libcurl.
#include <stdio.h>
#include <curl/curl.h>
#include <curl/types.h>
[code]....
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Dec 14, 2010
I want to suspend/resume a thread. The library I am using is pthread.h.I am also running my application on linux.Is there any function in pthread. let me suspend a thread temporary?I have read a document in which it was mentioned thatthread does not support suspend/resume
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Mar 7, 2010
i'm trying to write a bash script to upload an image to [URL], but i can't get i working properly. Everytime i try, the html returns me a error saying "Upload is disabled during short maintenance work (ETA 10 minutes). Brb!", while from the browser everything works fine. This is my current command line:
Code: curl -L -b cookie-pix.txt -c newcookie.txt www.pixhost.org/cover-upload -A "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)" -F 0=@/home/admin/Desktop/karm.jpg -F content_type=0 -F press=Upload And this is the html of the form:
[Code]....
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Nov 24, 2010
where I can download those books?:Practical Programming in Tcl and Tk 4th edition Tcl and the Tk Toolkit 2nd edition Tcl 8.5 Network Programming book Tcl/Tk: A Developer's Guide
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Feb 17, 2010
I am a brand new member
here is my question :
in a RedHat configuration :
i need to be sure that a partition has been formatted with those parameters code...
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Apr 3, 2011
I have just created a usb boot disk so that I can install Fedora 14.I used the following which was successfully. However, I am left wondering what does the bs parameter actually does. I know it mean bytes and copies these at a time. But how do I know what to set it to?dd if=F14-Live-i686.iso of=/dev/sdb bs=8MIn the above example it is set to 8MB. However could I set this to any value that I want?
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Jan 8, 2011
How do fix my Swap Partition? Last night I added unused space to the main Ubuntu partition. Now I noticed the Swap Partition is always at 0 bytes. I'm using a Sony Laptop, and have enclosed two screenshots. One of the Disk Utility and a system monitor.
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